Color Blindness Simulator
Preview an image or hex color through the four most common color-vision deficiencies.
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What you're seeing
Four standard simulations applied to your input:
- Protanopia — missing L (red) cones. ~1% of men.
- Deuteranopia — missing M (green) cones. ~1% of men. Most common red–green case.
- Tritanopia — missing S (blue) cones. Rare.
- Achromatopsia — no color vision at all. Very rare; useful as a worst-case grayscale check.
Matrices from Machado, Oliveira & Fernandes (2009). Applied directly to sRGB — good enough for design review, not a clinical simulation.
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